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	<div id="winchm_template_button"><A href="umdh_commands.htm" title="Previous topic"><img id="winchm_template_prev" alt="Previous topic" src="../template2/btn_prev_n.gif" border="0"></a><A href="analyze_umdh_logs.htm" title="Next topic"><img id="winchm_template_next" alt="Next topic" src="../template2/btn_next_n.gif" border="0"></a></div>
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<A href="introduction6.htm">Debugging Tools for Windows (WinDbg, KD, CDB, NTSD)</A> &gt; <A href="debugging_resources.htm">Debugging Resources</A> &gt; <A href="extra_tools.htm">Tools Included in Debugging Tools for Windows</A> &gt; <A href="umdh.htm">UMDH</A> &gt; <A href="umdh_commands.htm">UMDH Commands</A> &gt; </div>
	<div id="winchm_template_title">Analyze a Running Process</div>
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	<div id="winchm_template_content"><div id="mainSection"><p>Use the following commands to record and analyze the heap memory allocations in a running process. This analysis focuses on stack traces.</p>
<pre class="syntax">
    <b>umdh -p:</b><i>PID </i><b>[-f:</b><i>Log</i><b>F</b><i>ile</i><b>] [-v[:</b><i>MsgFile</i><b>]] | [-g] | [-h]
</b>
   </pre>
<h2><a id="ddk_analyze_a_running_process_dtools"></a><a id="DDK_ANALYZE_A_RUNNING_PROCESS_DTOOLS"></a>Parameters</h2>
<p></p>
<dl>
<dt><a id="_______-p_PID______"></a><a id="_______-p_pid______"></a><a id="_______-P_PID______"></a>       <b>-p:</b><i>PID</i>      </dt>
<dd>
<p>Specifies the process to analyze. <i>PID </i> is the process ID of the process. This parameter is required. </p>
<p>To find the PID of a running process, use Task Manager, Tasklist (Windows XP and later operating systems), or <a href="#Bookmark132">TList</a>.</p>
</dd>
<dt><a id="_______-f_LogFile______"></a><a id="_______-f_logfile______"></a><a id="_______-F_LOGFILE______"></a>       <b>-f:</b><i>LogFile</i>      </dt>
<dd>
<p>Saves the log contents in a text file. By default, UMDH writes the log to stdout (command window).</p>
<p><i>LogFile</i> specifies the path (optional) and name of the file. If you specify an existing file, UMDH overwrites the file.</p>
<div class="alert"><b>Note</b>    If UMDH was not started in Administrator mode, or attempts to write to "protected" paths, it will be denied access.</div>
<div> </div>
</dd>
<dt><a id="_______-v__MsgFile_"></a><a id="_______-v__msgfile_"></a><a id="_______-V__MSGFILE_"></a>       <b>-v[:</b><i>MsgFile</i><b>]</b></dt>
<dd>
<p>Verbose mode. Generates detailed informational and error messages. By default, UMDH writes these messages to stderr.</p>
<p><i>MsgFile</i> specifies the path (optional) and name of a text file. When you use this variable, UMDH writes the verbose messages to the specified file, instead of to stderr. If you specify an existing file, UMDH overwrites the file.</p>
</dd>
<dt><a id="_______-g"></a><a id="_______-G"></a>       <b>-g</b></dt>
<dd>
<p>Logs the heap blocks that are not referenced by the process ("garbage collection").</p>
</dd>
<dt><a id="_______-h"></a><a id="_______-H"></a>       <b>-h</b></dt>
<dd>
<p>Displays help. </p>
</dd>
</dl>
<h3><a id="comments"></a><a id="COMMENTS"></a>Comments</h3>
<p>On Windows 2000, if UMDH is reporting errors finding the stack trace database, and you have enabled the <b>Create user mode stack trace database</b> option in <a href="#Bookmark36">GFlags</a>, you might have a symbol file conflict. To resolve it, copy the DBG and PDB symbol files for the application to the same directory, and try again.</p>
<h3><a id="sample_usage"></a><a id="SAMPLE_USAGE"></a>Sample Usage</h3>
<div class="code"><span codelanguage=""><table>
<tr>
<th></th>
</tr>
<tr>
<td>
<pre>umdh -?
umdh -p:2230
umdh -p:2230  -f:dump_allocations.txt
umdh -p:2230 -f:c:\Log1.txt -v:c:\Msg1.txt
umdh -p:2230 -g -f:garbage.txt</pre></td></tr></table></span></div></div></div>	
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